Annual report pursuant to Section 13 and 15(d)

Secured Loans Receivable (Summary of Carrying-value of Secured Loans) (Details)

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Secured Loans Receivable (Summary of Carrying-value of Secured Loans) (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Secured loans (current and long-term) $ 110,424 $ 91,238
Secured loans originated by company and with related party    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Secured loans (current and long-term) 35,823 30,864
Secured loans originated    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Secured loans (current and long-term) 23,300 30,864
Secured loans originated - with a related party    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Secured loans (current and long-term) 12,523 0
Secured loans acquired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Secured loans (current and long-term) $ 74,601 $ 60,374